Fully renamed and updated everything, tagged, built

snippets/tail.md

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+### tail
+
+Returns all elements in an array except for the first one.
+
+Return `arr.slice(1)` if the array's `length` is more than `1`, otherwise return the whole array.
+
+```js
+const tail = arr => arr.length > 1 ? arr.slice(1) : arr;
+// tail([1,2,3]) -> [2,3]
+// tail([1]) -> [1]
+```